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Josephine Z. Rapp

@zoraur0ra.bsky.social
147 followers 217 following 4 posts

Microbial ecologist studying #microbes and their #viruses in #ArcticOcean #Seaice, #Permafrost & #DeepSea. ❄️🌨🌊🏔🏕📷 make me happy. And cats.

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Reposted by Josephine Z. Rapp
Land and Climate Review @landclimate.bsky.social · 18/11/2025
"These changes threaten water supply and infrastructure for billions of people" @leti-polar.bsky.social, @zoraur0ra.bsky.social, and @pxh.bsky.social warn that the Earth’s frozen regions are approaching irreversible tipping points, and call for urgent action at COP30: www.landclimate.org/...
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Josephine Z. Rapp @zoraur0ra.bsky.social · 23/08/2025
Never thought I’d end up writing a chapter for my favorite textbook from my student days ❄️📚 Honored to co-author Chapter 11 "Phyloecology of sea ice bacteria and archaea" in the 4th edition of Sea Ice. Huge thanks to my awesome co-authors! doi.org/10.1002/9781... #SeaIce #Microbes
doi.org
Phyloecology of sea ice bacteria and archaea
This chapter takes a phylogenetic ecological approach to the introduction to sea ice microbes by weaving together our current knowledge of the diversity, distribution, and functions of individual tax....
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Josephine Z. Rapp @zoraur0ra.bsky.social · 04/08/2025
Our new review "Life in the Frozen Ocean" is out in Annual Review of Marine Science — on microbes, algae & viruses thriving in sea ice, and what this reveals about evolution and life beyond Earth. Plus: my favorite figure I’ve ever drawn! ❄️🧬🌌 www.annualreviews.org/content/jour... #seaice #microbes
annualreviews.org
Life in the Frozen Ocean | Annual Reviews
Present seasonally or year-round in polar and subpolar seas, sea ice is one of the most complex and biologically rich ecosystems on Earth. Throughout the history of our planet, sea ice has periodicall...
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Josephine Z. Rapp @zoraur0ra.bsky.social · 02/06/2025
Excited to share our new study exploring chemoautotrophy in subzero Arctic brines. We identified cold-adapted Rubisco enzymes in Thiomicrorhabdus species, suggesting unique adaptations for carbon fixation in extreme conditions. Read more: journals.asm.org/doi/10.1128/... #Microbiology #Astrobiology
journals.asm.org
Chemoautotrophy in subzero environments and the potential for cold-adapted Rubisco | Applied and Environmental Microbiology
Autotrophy, or the fixation of inorganic carbon to biomass, is a key factor in life’s ability to thrive on Earth. Research on autotrophy has focused on plants and algae, but many bacteria are also aut...
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Josephine Z. Rapp @zoraur0ra.bsky.social · 03/02/2025
Hi 🧊bsky I'll be chairing the GRS on Polar Marine Science in Italy this March! We still have 10 seats available & 5 days left to apply! Join our ECR community to share your research and discuss the role of sea ice in ecosystem dynamics! www.grc.org/polar-marine... #polarresearch #marinescience
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